It's very hard to find this part,But I bought more than 15 of then.Profun, where did you get this part?
Do you want to buy it?
That is an interesting page about making your own models for tubes. It still assumes you have accurate data for the device you wish to model.
Ilimzn asked where you bought the 2SK69 VFETs and I am asking for a datasheet so that others have a basis for a model, if someone is prepared to make one. Do you have full specifications for 2SK69?
[2SK69]
VGDO:140V
VGSO:30V
VDSX:-140V
ID:-100mA
IG:-20mA
PT:800mW
Tj:150℃
Cis(pF):28
Igss:-10uA
mu:10min,30typ
VGDO:140V
VGSO:30V
VDSX:-140V
ID:-100mA
IG:-20mA
PT:800mW
Tj:150℃
Cis(pF):28
Igss:-10uA
mu:10min,30typ
What specifications should I need?Thanks, but for SPICE, you need more than basic specifications.
If you understand what a spice model is, what it looks like and what the abbreviated data is, you wouldn't ask that question. To prepare models, you would need to run accurate tests to determine the parameters such as the one shown by the curve tracer graph, but that is only one. When you a have a full set of parameters, they can be converted to terms that are compatible with spice data files for the software program.
Unfortunately, no datasheet = no model possible.
Here is a paper for preparing spice models for small signal JFETs and MOSFETs. Note that more data is required for large signal (power) applications where thermal and capacitive properties have significant influence on performance. You can see the considerable amount of data required. http://engr.case.edu/merat_francis/eecs245/PSpice_references/CH9_FETs.pdf
Unfortunately, no datasheet = no model possible.
Here is a paper for preparing spice models for small signal JFETs and MOSFETs. Note that more data is required for large signal (power) applications where thermal and capacitive properties have significant influence on performance. You can see the considerable amount of data required. http://engr.case.edu/merat_francis/eecs245/PSpice_references/CH9_FETs.pdf
thanks,but I think it is too difficult to finish.🙁If you understand what a spice model is, what it looks like and what the abbreviated data is, you wouldn't ask that question. To prepare models, you would need to run accurate tests to determine the parameters such as the one shown by the curve tracer graph, but that is only one. When you a have a full set of parameters, they can be converted to terms that are compatible with spice data files for the software program.
Unfortunately, no datasheet = no model possible.
Here is a paper for preparing spice models for small signal JFETs and MOSFETs. Note that more data is required for large signal (power) applications where thermal and capacitive properties have significant influence on performance. You can see the considerable amount of data required. http://engr.case.edu/merat_francis/eecs245/PSpice_references/CH9_FETs.pdf
Search: 2SK69
N-Channel V-FET
V(BR)DSS (V)=140
V(BR)GSS (V)=140
I(D) Abs. Drain Current (A)=100m
Absolute Max. Power Diss. (W)=800m
I(GSS) Max. (A)=10u
V(GS)off Max. (V)=7.0
I(DSS) Min. (A)=48m
g(fs) Min. (S) Trans. conduct.=30m
@V(DS) (V) (Test Condition)=10
C(iss) Max. (F)=28p
Status=Discontinued
Package=TO-9
Military=N
Last edited:
Hi!Here is a paper for preparing spice models for small signal JFETs and MOSFETs. Note that more data is required for large signal (power) applications where thermal and capacitive properties have significant influence on performance. You can see the considerable amount of data required. http://engr.case.edu/merat_francis/eecs245/PSpice_references/CH9_FETs.pdf
I am currently developing my own analog circuits simulator, based on a dictionary of elementary components. I would like to add a JFET model based on those in Spice, so I'm interested in your "CH9_FETs.pdf" file, but I can't access to it (login needed 🙁 ).
Is there any other way to get it?
If you understand what a spice model is, what it looks like and what the abbreviated data is, you wouldn't ask that question. To prepare models, you would need to run accurate tests to determine the parameters such as the one shown by the curve tracer graph, but that is only one. When you a have a full set of parameters, they can be converted to terms that are compatible with spice data files for the software program.
Unfortunately, no datasheet = no model possible.
Here is a paper for preparing spice models for small signal JFETs and MOSFETs. Note that more data is required for large signal (power) applications where thermal and capacitive properties have significant influence on performance. You can see the considerable amount of data required. http://engr.case.edu/merat_francis/eecs245/PSpice_references/CH9_FETs.pdf
Ian, even a basic model based on the curves without propper capacitance simulations should be possible. If i recall, someone developed a curve capture program that was originally intended for tubes (triodes). This may be useful. I am not sure but i think it generated a polinome based approximation of triode curves. It will not be accurate down at low voltages and currents but may well be usable enough.
Last I looked, there was no login problem but I think this is the author or at least editor of the PDF in question. Perhaps you could email him and get advice on how to access the information:.......I'm interested in your "CH9_FETs.pdf" file, but I can't access to it (login needed 🙁 ).
Is there any other way to get it?
Frank Merat.
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